|Year Of Publishing
Errors in effect estimate calculations or data synthesis
Lack of statistical expertise in handling of quantitative data
Data extraction errors and double counting
|Number of systematic reviews included
|Summary of Findings
|Agreement was 53% at trial level and 31% at meta-analysis level. Reasons for disagreement reasons for disagreement were broadly related to: different choices, exclusion of a trial, and data extraction errors. In 14 out of the 100 standardised mean differences calculated at the meta-analysis level, individual observers reached different conclusions than the originally published review.
|Did the article find that the problem(s) led to qualitative changes in interpretation of the results?
|Are the methods of the article described in enough detail to replicate the study?